{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD817C","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD817C","canonicalUrl":"https://icboms.com/onsemi/FOD817C","factsUrl":"https://icboms.com/api/mcp/products/FOD817C","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD817C optocoupler, 1-channel DC input, transistor output, 5000Vrms isolation, 4-DIP through-hole package, tube.","salesMarkdown":"The FOD817C is a single-channel optocoupler from onsemi, built with a DC-input LED and a phototransistor output in a 4-DIP through-hole package. It provides 5000Vrms of galvanic isolation between input and output sides. Current transfer ratio (CTR) is specified at 200% minimum and 400% maximum when the LED is driven at 5mA forward current. That 2:1 spread is tight for a phototransistor coupler — it keeps the logic threshold predictable across temperature and lot without a secondary gain stage. The output transistor can handle up to 70V collector-emitter and 50mA continuous current, with a typical Vce(sat) of 200mV at rated load. Rise and fall times are 4µs and 3µs typical, which puts the usable switching frequency around 100 kHz for digital isolation or slow-edge analog coupling. ## Temperature range and isolation rating Operating temperature spans -55°C to 110°C, which covers industrial control cabinets and outdoor telecom enclosures without derating. The 5000Vrms isolation rating meets basic reinforced insulation requirements per IEC 60950-1 for mains-separated circuits. The 4-DIP package (0.300-inch body width, 7.62mm lead spacing) is a standard footprint that drops into existing PCB layouts for the FOD817 series. The tube packaging means it ships in anti-static tubes for pick-and-place or hand assembly. The base product number FOD817 covers a family of CTR-binned variants — the 'C' suffix selects the 200-400% CTR window. If your design calls for a tighter or wider CTR range, the FOD817A (80-160%) or FOD817B (130-260%) are the same footprint and pinout.","metaTitle":"onsemi FOD817C Optoisolator, 5000Vrms, 4-DIP","metaDescription":"onsemi FOD817C optocoupler, 1-channel DC input transistor output, 5000Vrms isolation, 200-400% CTR at 5mA, -55 to 110°C. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Through Hole","Package / Case":"4-DIP (0.300\\\", 7.62mm)","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"FOD817","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"200mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"4µs, 3µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"400% @ 5mA","Current Transfer Ratio (Min)":"200% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.2V","Turn On / Turn Off Time (Typ)":"-","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/97f795ec3476128abe24ed3f2e223d6c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the FOD817C in the same family?","answer":"The FOD817A (80-160% CTR) and FOD817B (130-260% CTR) are pin-compatible and share the same 4-DIP package and 5000Vrms isolation rating. The difference is the current transfer ratio bin — choose the one that matches your logic threshold and LED drive current."},{"question":"What compliance documentation does onsemi provide for the FOD817C?","answer":"onsemi provides RoHS and REACH compliance declarations for the FOD817C. The part also carries UL recognition and VDE approval (DIN EN 60747-5-5) for reinforced insulation, though specific certification numbers should be verified against the latest onsemi documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD817C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD817C when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}